Prince William and George sing along at Palace gig - but Charles doesn't know the words

Prince William and Prince George adorably sang along to Sweet Caroline at tonight's Platinum Party in the Palace gig.

The royals were front and centre of the royal box, and whilst Prince George seemed to be not as interested during the rest of the concert, when Sir Rod Stewart started singing the UK football anthem, he was soon singing along.

Sweet Caroline is regularly played to whip fans up at the UK's national football games and fans were thrilled to see William and George singing along to the iconic track - but Prince Charles didn't seem to know the words.

William is the President of The Football Association and is arguably the biggest football fan of the whole Royal Family.

(PA)

So as the song rang out across Buckingham Palace and The Mall, fans were thrilled to see Prince William and George singing along.

However, when Prince Charles was on camera, he didn't seem to be singing along and instead just waved his flag.

The royals are front and centre of the royal box, standing in for Queen Elizabeth who is not at the event herself, after missing some other key events of the Platinum Jubilee celebrations due to her health.

William and George sang along (BBC)

The coverage of the Platinum Party at the Palace has been led by Roman Kemp, with the likes of Queen and Adam Lambert opening the show, and performances from Duran Duran and Alicia Keys to name a few.

Speaking before the show, Adam described it as very "surreal" to be performing at the event.

He said: "It’s wild. We’re on tour right now so we’re ready to go, we’re very warm and it always feels great to be a guest of Brian and Roger on the stages around the world. And now to be a guest of the United Kingdom for the Jubilee, it’s a huge honour.

However, Charles didn't seem to know the words (BBC)

"What I’ve learned about the Queen, (is) what an impressive lady, what a graceful and powerful presence in this country. I’m thrilled. As I was on stage, I realised I was in the gate of the palace and thought this is definitely the most surreal thing I have done."

Sir Rod Stewart also recently described the Queen as like a "sister" to him because she had been around so much of his life.